Furnace



(No Model.) 2 Sheets-Sheet 1.

H. STANTON.

FURNACE.

No. 55 1;057. Pa gented Dec. 10, 1895.

$144 m W W ANDREW EGHAHAMFI'IOTO-LITNQWASHINGTOKQC.

(NoM odeL) 5 I 'H'. STANTON.

FURNACE. No. 551,057. Patented Dec. 10,1895.

ANDREW B.GRAHAM. PHUTO'UTNQWASHINOTUNJL.

2 sne i ssneet 2.

UNITED STATES PATENT ()FFICE.

HENRY STANTON, OF FLUSHING, OHIO.

FURNACE.

SPECIFICATION forming part of Letters Patent N 0. 551,057, datedDecember 10, 1895.

Application filed January 29,1895. Serial No. 536,595. (No model.)

T0 at whom it may concern:

Be it known that I, HENRY STANTON, a citizen of the United States,residing at Flushing, in the county of Belmont and State ofOhio, haveinvented certain new and useful Improvements in Furnaces, of which thefollow ing is a specification, reference being had therein to theaccompanying drawings.

This improvement is designed to provide a hot-air furnace which shall beeasily built, readily repaired, and kept gas-tight, adapted to be usedeither with or without ahot-water system and at the same time beconvenient and economical in use.

To this end the invention consists in the peculiar construction,arrangement, and combinations of parts hereinafter described and thendefinitely claimed.

In the accompanying drawings, Figure 1 is a vertical centralcross-section of a hot-air furnace without the water-heating apparatus,constructed according to my invention. Fig. 2 is a central longitudinalvertical section of a very similar furnace with the hot-water systemadded. Fig. 3 is avertical cross-section of the furnace shown in Fig. 2,taken on the line 00 00, Fig. 2. Fig. iis ahorizontal section taken onthe line 'y' y, Fig. 2. Fig. 5 is a detail showing in reversed plan theshape of the central arch-bricks in Fig. 1.

Referring now to the details of the drawings by figures, 1 represents ahorseshoe-shaped iron or steel shell, which I shall hereinafter term ametal arch, secured at each end to heads 2 3, preferably of cast-iron,having flanges 4. extending outward, to which the metal arch 1 isattached by bolts 5. The bottom of this arch is also bolted to abase-casting 6, having upturned flanges '7. Bolted to both ends of saidarch and to the heads 2 3 are outer arched plates 8, which form asupport for the outer brickwork, and thus nearly all the surface of themetal arch 1 may be used for heating purposes. The back and front headsare bricked up, as indicated at 9, except for the necessary openings forthe door, damper, 850. Next above the base-casting 6 is the ash-box 10,having flanges 11, on which rests the brickwork forming the sides 12 ofthe fire pot. Resting upon these sides is the arched top of thefire-box, consisting of special-shaped tiles or bricks 13 14, whichlatter have recesses 15 in each side, as indicated in Fig. 5, to makepassages for the products of combustion from the fire-pot below. In thebrickwork in each of the sides of the fire-pot there are air-passages16, which begin at the damper 17 and terminate at the lower edges of thebricks 13, as clearly shown by the arrows in Figs. 1 and 2. At each sidesootscrapers 18 are shown, which are connected to rods 19, by whichmotion back and forth may be given to the scrapers 18 to scrape off thesoot, which will fall down and maybe removed through the soot-doors 20.

A passage 21 is shown in Fig. 2, which may be used in drawing up thefire, but should be kept closed by the damper 22 at other times, whenthe products of combustion after passing through the perforations in thetop of the arch over the fire-pot will pass down on the outside of thebrick sides 12 to passages 23 on each side of the ash-box and out at therear to the smoke-box 24:.

The brickwork at the front and rear is set beveling at the edges, asshown at 25, so as to allow of the utilization of as much as possible ofthe surface of the steel arch, and between it and the back and frontcastings is a packing of mineral wool, asbestos, or similarnon-conducting material.

At the bottom of the fire-pot are the ordinary rocking grate-bars 26,resting on supports 27, fastened to the ash-box and operated by a rod 28and lever 29; but as nothing is claimed on these further description isunnecessary.

Stay-bolts are shown at 30 to connect the metal arch 1 and the outerarch-plates 8 to the brick casing 31, which should be provided with theusual openings 32 for the hotair pipes. T

When I combine with the hot-air furnace a water-heating system, I preferthearrange ment shown in Figs. 2 and 3. In this case 34 indicates anoutflow-water box, and 35 the return-water box, both connected bysuitable connections 36 and 37 with the radiators (not together.

shown) and also connected to each other by the system of pipes 38, 39,and 40, elbows 41, 42, and 43, and nipples 44, which latter have rightand left hand threads by which the connections may be readily made.

The top 45 of the outer casing is formed of sheet metal and filled withsand or earth 46 to retain the heat, and under its center is set adamper 47, which can be swung, as indicated by dotted lines, to directthe heat in different directions.

I generally set fire-bricks 48 upon the upper set of pipes to divide upthe flame and heat from the furnace. If the pipes are set very closetogether, there will not be so much need of this; but I prefer to usethe bricks, as they help to burn the smoke and soot. The number of pipesis graduated by the amcu-nt of heat to be given off by the hot-watersystem. If all the pipes are not required, some of them may be dispensedwith and the holes in the water-box plugged.- I

In order that the interior of the furnace may be readily got at forrepairing or otherwise, should it be necessary, I divide the front head2 in two parts, each having a horizontal flange 49, by which they may bebolted By removing the upper part accessmay be had to the interior ofthe furnace.

The base is provided with lugs or ribs 50 to keep the parts of theash-box in place, and there are other ribs 51 formed onit to form guidesfor the bottom of the scraper,

The lower part of the bricks 1 3 is chambered out, as shown at 52, todiifuse the air entering through the passages 16.

Beneath the furnace there is a cold-air box 53, from which the airpasses up the outside of the arch 1, becoming heated thereby, andpassing out through the air-pipes to the different rooms in the usualmanner.

Some of the advantages of the improvements above described are asfollows: The heads, being seamed outside, prevent any gases escapinginto the air-space, and leaks can be readily stopped should there be anyleakage. Nearly all of the metal arch is utilized as heatingsurface. Thecold air comes in contact with the coolest part of the heating-surfacefirst and after-ward with the hottest part as it becomes heated. As thelower part of the metal arch is inclined inward, the descending productsof combustion strike against it as they descend, while the incoming coldair does the same as it rises. The fire'brick fire-box keeps the fire 0dof the metal, thus equalizing the heat and making the furnace moredurable. In case the fire-brick over the fire or any part of theinternal work of the furnace needs replacing or repairing, it canreadily be done by removing the upper part of the front head, and last,but not least, the furnace will be found to be a very economical andpowerful heater whether with or without the hot-water part.

What I claim as new is- 1. In a hot air furnace,- thecombination of agrate, a brick fire-pot, a perforated top over the fire-pot, a metalarch inclosing said firepot and top and arranged to direct the productsof combustion downward, a cold air heating chamber inclosing said arch,and fines arranged to draw the products of combustion downward betweenthe fire-pot and arch and keep them separate from the air in theairchamber, substantially as described.

2. In a furnace, the combination of a grate, a fire-pot above thegrate,a perforated top over the fire-pot, a metal arch having its sidesin cline'd inward toward the bottom and arranged to direct the productsof combustion downward, an outer cold air heating chamber arranged todirect the incoming air against the inclined sidesor the arch, and finesarranged to draw the products er combustion downward and keep themseparate from the air in the outer air-chamber, substantially asdescribed.

Ina furnace, the combination of a grate,-

. a fire-pot above the grate, a metal arch, front and rear heads havingoutwardly turned flanges to receive the metal arch, and a cold airchamber inclesing the metal arch,- sub stantially as described.

4. In a furnace, the combination of metal heads having outwardly turnedflanges, an inner metal arch running from one head to theothen-and outermetal arch plates for supporting the brickwork, each connected to a headand the inner arch, substantially as described.

5. In a furnace, the combination cf a fire pot, a metal arcli over the fre pot, metal heads at each end of the fire-pot having outwardly turnedflanges to receive the ends of themetal arch, and firebrick ends to thefire-pot having their outer faces covering the inner faces of the headsandtheir edges beveled on the top and sides, substantially as and forthe purpose specified. V,

6. In a furnace,- the combination of the ashbox 10 having flanges 11,the brickwork sides supported by said flanges, the brick top havingpassages for the products of combustion,

the metal arch to direct them downward and a passage for the escape ofthe products of combustion near the bottom of the arch, substantially asdescribed. 4

7. In a furnace,-the combination with a firepot and a metal archover thesame,- of the outflow waterbon 34, the inflow water box 85, the rows ofpipes 38 and- 39 inclined in oppo site directions and setbetween thefire-pot and the metal arch, elbows42', 43, and the right and lefthandthreaded nipples 44 connecting' the rows of pipes tcg'ether, thevertical row of pipes 40 connected to box 35, and the elbows 41connecting the vertical with the horizontal pipes, substantially asdescribed.

8. In a furnace; the combination with a metal arch and a fire-pot, ofinflow and 0nt- In testimony whereof I affix my signature, flow boxes,pipes connecting said boxes arin presence of two Witnesses, this 26thday of ranged'in a horizontal row between the fire- January, 1895.

pot and metal arch, and bricks resting npon HENRY STANTON. and supportedby said pipes to protect said Witnesses:

metal arch from the flames of the fire-pot, JOHN W. CRAWFORD,

substantially as described. SAMUEL E. WILLIAMS.

